Java Method getDeclaredAnotations() Method

The getDeclaredAnnotations () method of Method class returns an array of annotations directly present on this element and ignores inherited annotations. If no annotations present on this element, the return value is an array of length 0. The caller of this method can modify the returned array.

Syntax

Parameter

No parameter is passed.

Returns

An array of annotations present on this element

No exception is thrown.

Example 1

//import statement
import java.lang.annotation.Retention; 
import java.lang.annotation.RetentionPolicy; 
import java.lang.reflect.Method; 
import java.lang.annotation.Annotation; 

@Retention(RetentionPolicy.RUNTIME)  // Retention policy
@interface SelfCreatedAnnotationinterfaceX1 { 
    public String key(); 
    public String value(); 
} 

 class DemoClassX11 { 
    private String field; 
  
    @SelfCreatedAnnotationinterfaceX1(key = "getFieldvalue", 
                           value = "getting field attribute") 
    public String 
    getFieldvalue() 
    { 
        return field; 
    } 
} 
  
public class  ReflectMethodgetDeclaredAnnotationsExample1
 { 
    public static void main(String[] args) 
    { 
        Method[] mthd = DemoClassX11.class.getMethods(); 
        Annotation[] ann = mthd[0].getDeclaredAnnotations(); 
        for (Annotation an : ann) { 
            SelfCreatedAnnotationinterfaceX1 selfann = (SelfCreatedAnnotationinterfaceX1)an;   
           System.out.println("key: " + selfann.key()); 
            System.out.println("value: " + selfann.value()); 
        } 
    } 
} 

Test it Now

Output:

key: getFieldvalue
value: getting field attribute

Example 2

//import statements
import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Method;

// declare a new annotation
@Retention(RetentionPolicy.RUNTIME)
@interface DemointerfaceX1 {
   String str();
   int val();
}

public class ReflectMethodgetDeclaredAnnotationsExample2  {

   // set values for the annotation
   @DemointerfaceX1(str = "Demo Annotation", val = 100)
   // a method to call in the main
   public static void sample() {
ReflectMethodgetDeclaredAnnotationsExample2 obj = new ReflectMethodgetDeclaredAnnotationsExample2();

      try {
         Class cls = obj.getClass();
         Method mthd = cls.getMethod("sample");
         Annotation[] ann = mthd.getDeclaredAnnotations();

         // print the annotation
         for (int i = 0; i < ann.length; i++) {
            System.out.println(ann[i]);
         }
      } catch (NoSuchMethodException exc) {
         exc.printStackTrace();  // pritnt the stack trace for object
      }
   }
   public static void main(String args[]) {
     sample();
   }
}

Test it Now

Output:

@DemointerfaceX1(str=Demo Annotation, val=100)

Next TopicJava Method Class

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